"""Simple SMTP email service."""
import smtplib
import logging
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from app.config import settings

logger = logging.getLogger(__name__)

def send_email(to: str, subject: str, body: str, html: str | None = None) -> bool:
    """Send email via configured SMTP. Returns True on success."""
    if not settings.SMTP_HOST:
        logger.warning(f"SMTP not configured — would send to {to}: {subject}")
        return False
    try:
        msg = MIMEMultipart("alternative")
        msg["Subject"] = subject
        msg["From"] = settings.SMTP_FROM
        msg["To"] = to
        msg.attach(MIMEText(body, "plain"))
        if html:
            msg.attach(MIMEText(html, "html"))
        with smtplib.SMTP(settings.SMTP_HOST, settings.SMTP_PORT) as smtp:
            smtp.starttls()
            if settings.SMTP_USER:
                smtp.login(settings.SMTP_USER, settings.SMTP_PASSWORD)
            smtp.sendmail(settings.SMTP_FROM, [to], msg.as_string())
        logger.info(f"Email sent to {to}: {subject}")
        return True
    except Exception as e:
        logger.error(f"Email failed to {to}: {e}")
        return False